// Licensed to Cloudera, Inc. under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  Cloudera, Inc. licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

const getSearchParameter = (search: string, name: string, nullAllowed?: boolean): string | null => {
  name = name.replace(/[\[]/, '\\[').replace(/[\]]/, '\\]');
  const regex = new RegExp('[\\?&]' + name + '=([^&#]*)'),
    results = regex.exec(search);
  if (nullAllowed && results === null) {
    return null;
  }
  return results === null ? '' : decodeURIComponent(results[1].replace(/\+/g, ' '));
};

export default getSearchParameter;
